Numb nuts, cock Issaac and stundarse all fall into that category of descriptions which are applied to people (of either gender and those in between) who you don’t like.
“My dear”, “Dear Jeeses”, and “I could eat you” are terms of endearment.(though that last one now is grossly misinterpreted)
I know I shouldn’t have to explain it, I know, but the next time I’m in Europe, Asia, or to Canada and some smarmy French person or some upity Brit, or some cocky Italian gets upset with me over a misunderstanding like ” Dear Jeeses – that’s coffee!”, or, “Mind now Numb nuts you don’t swell up and break out in Naples” I’m going to take a hissy fit and render the fat off ’em with a line of oaths that could scald the arse off of St. Peter. Now. The rest of ya, straighten up!
Talking about stundarses! Jeeses we got to go straighten up Ontario and Alberta now. Will this job never end?